BE622412A - - Google Patents
Info
- Publication number
- BE622412A BE622412A BE622412DA BE622412A BE 622412 A BE622412 A BE 622412A BE 622412D A BE622412D A BE 622412DA BE 622412 A BE622412 A BE 622412A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST18317A DE1153095B (de) | 1961-09-13 | 1961-09-13 | Schaltungsanordnung fuer tonfrequenten Anruf von Fernsprechstationen mit Verstaerkern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE622412A true BE622412A (US06534493-20030318-C00166.png) |
Family
ID=7457803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE622412D BE622412A (US06534493-20030318-C00166.png) | 1961-09-13 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE622412A (US06534493-20030318-C00166.png) |
| DE (1) | DE1153095B (US06534493-20030318-C00166.png) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3614324A (en) * | 1970-03-06 | 1971-10-19 | Bell Telephone Labor Inc | Arrangement for using a data set carrier detector to detect incoming ringing |
| DE2548159C2 (de) * | 1975-10-28 | 1983-05-11 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung für den akustischen Ruf in einer Chef- und Sekretärfernsprechanlage |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL245026A (US06534493-20030318-C00166.png) * | 1958-11-05 | |||
| DE1108748B (de) * | 1959-08-04 | 1961-06-15 | Standard Elektrik Lorenz Ag | Schaltungsanordnung fuer mit einem Transistor ausgeruestete Teilnehmerstationen |
| DE1108274B (de) * | 1959-11-06 | 1961-06-08 | Standard Elektrik Lorenz Ag | Schaltungsanordnung fuer Handfernsprecher mit eingebautem Transistorverstaerker |
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0
- BE BE622412D patent/BE622412A/xx unknown
-
1961
- 1961-09-13 DE DEST18317A patent/DE1153095B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1153095B (de) | 1963-08-22 |
